Scrum vs Kanban vs Scrumban

	Scrum	Kanban	Scrumban
Iterations	1-4 week sprints	Continuous work alongside releases shorter than one week or bigger iterations like goals	Continuous work with short cycles for planning and longer cycles for release
Work routines	Push and pull principle mixed with early binding to team members	Pull principle with late binding to team members	Pull principle with late binding to team members
Scope limits	Push and pull principle mixed with early binding to team members	Pull principle with late binding to team members	Pull principle with late binding to team members
Planning routines	Sprint planning	Release/iteration planning, demand planning	Planning on demand for new tasks
Estimation	Must be done before start of sprint	Optional	Optional
Performance metrics	Burndown	Cumulative flow diagram, lead time cycle time	Average cycle time
Continuous improvement	Sprint retrospective	Optional	Short Kaizen event as an option
Meetings	Sprint planning, daily scrum, retrospective	Can be avoided	Short Kaizen event
Roles	Product owner, Scrum master, team	Team and other work specific roles	Team and other work specific roles
Team members	Cross-functional team members	Cross-functional team members, specialization is allowed	Specialization or preference to tasks
Task size	The size that can be completed in sprint	Any size	Any size
New items in iteration	Forbidden	Allowed whenever queue allows it	Allowed whenever queue allows it
Ownership	Owned by a team	Supports multiple teams ownership	Supports multiple teams ownership
Board	Defined/reset each sprint	Persistent	Persistent
Prioritization	Through backlog	Optional	Recommended on each planning
Rules	Constrained process	Only a few constraints, flexible process	Slightly constrained process
Fit for	Enterprise maturity for teams working on product or especially project which is longer than a year	Support and maintenance teams, continuous product manufacturing	Startups, fast-pace projects, continuous product manufacturing
Continuous improvement	Sprint retrospective	Optional	Short Kaizen event as an option
Meetings	Sprint planning, daily scrum, retrospective	Can be avoided	Short Kaizen event